Hot Tub Water Chemistry

3,853 topics in this forum

1. Total Chlorine High/Free low

   By Wiffleguy, October 12, 2023
   • 2 replies
   • 751 views
   • 
   • waterbear
   • October 18, 2023

3. PH jumps above 8

   By Clarence S, September 26, 2023
   • 15 replies
   • 939 views
   • 
   • Clarence S
   • October 5, 2023

4. Yellow/white slimy flakes in my hot tub (Giant but break down easy)

   By Jessmzam, June 8, 2021   

   • hottub
   • calcium
   • (and 2 more)

     Tagged with:

     • hottub
     • calcium
     • biofilm
     • water
   • 15 replies
   • 6.9k views
   • 
   • derf
   • September 26, 2023

5. Cloudy water in Nordic Crown XL

   By NanaJ, September 23, 2023
   • 1 reply
   • 710 views
   • 
   • waterbear
   • September 23, 2023

6. pH vs. Alkalinity

   By SMaguire, September 22, 2023
   • 1 reply
   • 650 views
   • 
   • waterbear
   • September 22, 2023

7. Help… bright yellow film on sides of hot tub. Can’t get water balanced and ready to list on Craigslist :(

   By TraceyM, August 31, 2023
   • 15 replies
   • 969 views
   • 
   • TraceyM
   • September 9, 2023

8. Wide swings in readings

   By Susanj, August 15, 2023
   • 2 replies
   • 618 views
   • 
   • waterbear
   • August 28, 2023

9. Do you leave the center band on the filter?

   By CedarWoman, August 26, 2023
   • 1 reply
   • 1k views
   • 
   • waterbear
   • August 26, 2023

10. Just refilled, No chemicals added and numbers are all looking good? What do I add?

    By TraceyM, July 29, 2023
    • 14 replies
    • 1.1k views
    • 
    • TraceyM
    • August 11, 2023

11. Cause of gasket failure

    By plannersteve, July 6, 2023
    • 4 replies
    • 1.1k views
    • 
    • RDspaguy
    • August 8, 2023

12. Change over from dry chlorine to liquid

    By Mandydon, August 5, 2023
    • 1 reply
    • 445 views
    • 
    • waterbear
    • August 5, 2023

13. Need help lowering alkalinity in swim spa

    By Redwagon240, July 3, 2023
    • 7 replies
    • 902 views
    • 
    • waterbear
    • July 30, 2023

14. Multiple purges with filter? And stuck jets

    By Jojalis, July 23, 2023
    • 1 reply
    • 554 views
    • 
    • Ahhsomeguy
    • July 25, 2023

15. what is this grey goo?

    By j_jones, July 14, 2023
    • 7 replies
    • 977 views
    • 
    • waterbear
    • July 21, 2023

16. Frustrated with new Spa

    By Jigstick, June 18, 2023
    • 8 replies
    • 1k views
    • 
    • waterbear
    • July 18, 2023

17. For a bromine spa do you really only need to add pure Sodium Bromide at startup?

    By BroMean, July 25, 2021
    • 7 replies
    • 2.7k views
    • 
    • waterbear
    • July 18, 2023

18. Yellow goopy flakes in clear water

    By Northern, July 13, 2023
    • 2 replies
    • 890 views
    • 
    • Northern
    • July 14, 2023

19. Need urgent help for fear of ruining my spa

    By Son goku, July 2, 2023
    • 8 replies
    • 953 views
    • 
    • waterbear
    • July 14, 2023

20. Good chemistry

    By cpepp, July 12, 2023
    • 6 replies
    • 714 views
    • 
    • waterbear
    • July 13, 2023

21. High total Bromine readings

    By Gerardo, July 7, 2023
    • 1 reply
    • 426 views
    • 
    • waterbear
    • July 8, 2023

22. Dichlor/bleach method - combined chlorine?

    By Bouncycow, July 3, 2023
    • 4 replies
    • 469 views
    • 
    • Bouncycow
    • July 5, 2023

23. Dry Acid and Fresh Spa Fill

    By TexEd, July 4, 2023
    • 3 replies
    • 522 views
    • 
    • waterbear
    • July 5, 2023

24. 2 month storage

    By SJ Hart, June 12, 2023
    • 2 replies
    • 419 views
    • 
    • SJ Hart
    • June 14, 2023

25. Sticky Blue Stain at Waterline

    By RJRon, June 5, 2023
    • 3 replies
    • 839 views
    • 
    • RDspaguy
    • June 12, 2023

26. Dead Sea Salt

    By footie, April 14, 2011
    • 13 replies
    • 17.2k views
    • 
    • David Entwistle
    • May 28, 2023